If yacht owners really want to put everyone at port to shame, they should consider sailing on the Migaloo Private Submersible Yacht. A concept yacht created by Migaloo, an Austrian design and engineering firm, the line of luxury superyachts offers a range of bespoke underwater crafts that vary in size. After sailing the new Migaloo submersible yacht on the water, owners can close up the decks and turn the craft into a fully operational submarine.

“What we are attempting to do is to create a living space where exterior and interior interact in harmony,” says Christian Gumpold, managing director and head of design at Migaloo. With rooms that open to the ocean for dining alfresco while above water, and large viewing galleries for taking in the marine life when submersed, the Migaloo creates that harmony. What’s more, the firm reaffirms its focus on luxury with optional amenities that include helipads, swimming pools, movie theaters, elevators, wine cellars, libraries, and private terraces.

The Migaloo submersible yacht moving underwater.

Of course, safety is a major focal point as well. Each superyacht will be built to U.S. Navy SUBSAFE safety standards, which ensure that the interiors will stay watertight and the vessel can recover from unanticipated flooding. According to Migaloo, solitude is a major point of interest for yacht owners, which is why the ability to dive beneath the surface and out of view might have great appeal. “Privacy is a big issue on superyachts,” says Gumpold, “our answer to this concern is simply submerging the vessel into complete privacy.”